Development of a cold neutron polarizer working under a low external magnetic field less than 0.5 mT

被引：5
|
作者：
Hino, M [1 ]
Kawai, T
Ebisawa, T
Tasaki, S
Achiwa, N
机构：
[1] Kyoto Univ, Inst Res Reactor, Kumatori, Osaka 5900494, Japan
[2] Kyushu Univ, Dept Phys, Fukuoka 8128581, Japan
来源：
PHYSICA B-CONDENSED MATTER | 1999年 / 267卷
基金：
日本学术振兴会;
关键词：
multilayer; polarizer; analyzer; Supersendust (Fe-Ni-Si-Al alloy);
D O I：
10.1016/S0921-4526(99)00090-3
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A magnetically very soft neutron polarizing mirror which consists of Supersendust (Fe58Ni32Si6Al4; 10.5 nm)/germanium (Ce; 8 nm) [30 bilayers] has been developed. Since the potential energy of the Supersendust layers for down arrow spin neutron is almost equal to that of germanium, a high efficiency of neutron polarization is expected. The mirror has been evaporated on a polished silicon wafer in an applied magnetic field of 14 mT in order to saturate the film in a lower magnetic field. The neutron polarizing efficiency was 95% in the low magnetic field of 0.5 mT and the coercive force was estimated to be 1 mT, (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：360 / 362
页数：3
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